Kim Yuk Ting is levonorgestrel with a specification of 1.5mg, and Yuk Ting is levonorgestrel with a specification of 0.75mg, and there is no such thing as which one is better. Jin Yuting and Yuting are more common emergency contraceptive pills, their main ingredient is levonorgestrel, the main difference is that the specifications are not the same, Jin Yuting is 1.5mg, once only need to eat a piece of it, Yuting is 0.75mg, you need to eat two tablets, they are the same role, side effects and adverse reactions, and there is no which one is good to say. Levonorgestrel is mainly used for emergency contraception, and may cause some adverse reactions, such as menstrual changes, but also nausea, vomiting, breast tenderness, headache, dizziness and other symptoms, if pregnancy is suspected or known to be pregnant can not be used, and women over the age of 40 years old is prohibited. If you need to use the drug, it is recommended to use the drug under the guidance of a doctor, not blindly self-medication to avoid adverse effects.